22284281638 has 4 divisors (see below), whose sum is σ = 33426422460. Its totient is φ = 11142140818.

The previous prime is 22284281627. The next prime is 22284281641. The reversal of 22284281638 is 83618248222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83618248222 = 2 ⋅41809124111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571070408 + ... + 5571070411.

It is an arithmetic number, because the mean of its divisors is an integer number (8356605615).

Almost surely, 2^22284281638 is an apocalyptic number.

22284281638 is a deficient number, since it is larger than the sum of its proper divisors (11142140822).

22284281638 is a wasteful number, since it uses less digits than its factorization.

22284281638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142140821.

The product of its digits is 589824, while the sum is 46.

The spelling of 22284281638 in words is "twenty-two billion, two hundred eighty-four million, two hundred eighty-one thousand, six hundred thirty-eight".